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  1. If not already in place, install a Nessus scanner on the same host as SecurityCenter. It does not need to be started or otherwise configured.

    To prevent the Nessus scanner from starting automatically upon restarting the system, run the following command:

    # /sbin/systemctl is-enabled nessusd off

  2. Run the following command and save the challenge string that is displayed:

    # /opt/nessus/sbin/nessuscli fetch –-challenge

  1. Navigate your browser to
  2. Take the challenge string from Step 2 and your Activation Code, and place those values in the appropriate fields on the web page. Click the “Submit” button.
  3. On the next page, copy the link that starts with and save it as a favorite. Within the saved link change “all-2.0.tar.gz” to “sc-plugins-diff.tar.gz”. This link will be needed for future use. Do not click the link for nessus-fetch.rc as it is not needed.
  4. Go to the favorite you created, which will prompt you to download a file. Download the file, which will be called sc-plugins-diff.tar.gz.
  5. Save the sc-plugins-diff.tar.gz on the system used to access your SecurityCenter GUI.
  6. Log in to the SecurityCenter GUI as the admin user.
  7. Navigate to the System -> Configuration page and select the Plugins/Feed option.
  8. Click “Upload Plugins” on the Active Plugins line and browse to the saved sc-plugins-diff.tar.gz file, and then upload to SecurityCenter.
  9. The plugin update will take a few to several minutes. The date and time will change in the “Last Updated” field when completed.

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